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Tube Changer is the iPhone app that helps you travel quickly through the London Underground. It tells you which carriage of the train to be on so that when you arrive at your destination you’re right by the correct way out or interchange.

It’s quick and easy to use:

  1. Select the tube line you’re travelling on
  2. Select the station where you want to change or exit
  3. Select the direction you’re going in

Tube Changer then shows you diagrams of the train for every exit or interchange at your chosen station. Red blocks show you which carriage to use when you board the train. You’ll even see what side of the carriage to stand on, and if you should be towards the front or the back.

Tube Changer works on any iPhone or iPod touch. Click here to see more features.